US8609990B2 - Gasket for electric cables - Google Patents

Gasket for electric cables Download PDF

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Publication number
US8609990B2
US8609990B2 US13/394,413 US201013394413A US8609990B2 US 8609990 B2 US8609990 B2 US 8609990B2 US 201013394413 A US201013394413 A US 201013394413A US 8609990 B2 US8609990 B2 US 8609990B2
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US
United States
Prior art keywords
main body
gasket
cable
hole
deformability
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US13/394,413
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English (en)
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US20120181754A1 (en
Inventor
Bruno Levi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Palazzoli SpA
Original Assignee
Palazzoli SpA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Palazzoli SpA filed Critical Palazzoli SpA
Assigned to PALAZZOLI S.P.A. reassignment PALAZZOLI S.P.A. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LEVI, BRUNO
Publication of US20120181754A1 publication Critical patent/US20120181754A1/en
Application granted granted Critical
Publication of US8609990B2 publication Critical patent/US8609990B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/22—Installations of cables or lines through walls, floors or ceilings, e.g. into buildings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G15/00—Cable fittings
    • H02G15/013—Sealing means for cable inlets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/02—Details
    • H02G3/08—Distribution boxes; Connection or junction boxes
    • H02G3/088—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings or inlets

Definitions

  • the present invention relates to a gasket for electric cables.
  • an electric cable can be connected to a device by means of a sealing system that ensures the required degree of protection.
  • Conventional sealing systems such as cable glands, are generally constituted by a gasket that surrounds the cable and by a locking device that prevents the cable from moving and at the same time makes the gasket adhere to the cable and to the support in order to prevent infiltrations.
  • sealing gaskets also can be constituted by simple rings made of elastomer or have complex shapes.
  • spiral gaskets are known which offer the advantage that they can be applied to the cable without cutting it and therefore they can be applied to a continuous through cable.
  • the aim of the present invention is to provide a sealing gasket that can be applied to the cable very easily and quickly.
  • an object of the invention is to provide a gasket that ensures a high degree of protection and tightness.
  • Another important object of the invention is to provide a sealing gasket that can be used for a wide range of cable cross-sections.
  • a further object of the invention is to provide a gasket that can be applied to a through cable.
  • Another object is to provide a gasket that is versatile and can be used advantageously for various types of cables and electrical devices.
  • Another object of the present invention is to provide a gasket which, by virtue of its particular constructive characteristics, is capable of giving the greatest assurances of reliability and safety in use.
  • a gasket particularly for electric cables, comprising a main portion made of elastic material, characterized in that it comprises a through hole that passes longitudinally through said main body and constitutes the seat of a cable to be insulated; a longitudinal slit passes through said main body and connects said through seat to the outside, allowing, by elastic deformability of said main portion, the insertion of said cable in said through seat.
  • FIG. 1 is a perspective view of the gasket according to the present invention
  • FIG. 2 is a transverse sectional rear view of the gasket
  • FIG. 3 is a sectional side view of the gasket, taken along the plane of FIG. 4 ;
  • FIG. 4 is a plan view of the gasket
  • FIG. 5 is a perspective view of the gasket in working conditions before applying the closure
  • FIG. 6 is a transverse sectional view of the gasket in working conditions with a cable having a smaller cross-section
  • FIG. 7 is a transverse sectional view of the gasket in working conditions with a cable having a larger cross-section
  • FIG. 8 is a longitudinally sectional side view of the gasket inserted in the working seat
  • FIG. 9 is a view, similar to the preceding one, of the gasket in working conditions.
  • the gasket according to the invention comprises a body made of rubber material and constituted by a main portion 2 , which is substantially cylindrical and is connected to a substantially frustum-shaped shield 3 by means of a connecting portion 4 , whose diameter is smaller than the diameter of the main portion and smaller than the diameter of the base of the shield 3 .
  • the entire gasket is crossed by a through hole 5 , which constitutes the seat of a cable 6 to be insulated.
  • a longitudinal slit 7 which passes through the entire gasket, connects the through seat 5 to the outside allowing, by the elastic deformability of the material that constitutes the gasket, the insertion of the cable 6 in the through seat 5 .
  • the main body 2 of the gasket is divided by slit 7 into two longitudinal portions, a portion 8 with greater deformability and a portion 9 with lower deformability, that face one another across the slit 7 .
  • the portion 8 with greater deformability is partially hollow by virtue of enclosed cavities or chambers 10 and has a substantially flat surface 11 , on which a presser 12 which is part of the containment body 13 of the gasket.
  • the gasket 1 is in fact adapted to ensure insulation between the cable 6 and the inside of the containment body 13 .
  • the containment body can be constituted by any electrical device, such as a hermetic box for electrical devices, such as for example a junction box, a connector, a control device, etcetera.
  • a hermetic box for electrical devices such as for example a junction box, a connector, a control device, etcetera.
  • the through hole 5 has differentiated cross-sections: a first cross-section 23 , which is connected to a second cross-section 22 , which is wider and in turn is connected to a central cross-section 21 , which is smaller than the second cross-section 22 and in turn is connected to a terminal cross-section 20 .
  • the main body 2 is more easily deformable, in other words softer, at the narrower central cross-section 21 , so that when the gasket is closed inside the cable gland, formed by the presser 12 and by the containment body 13 , the cable 6 is completely surrounded within the through seat 5 , thus ensuring the tightness of the connection.
  • FIGS. 6 and 7 show the use of the same gasket for a cable having a smaller cross-section ( FIG. 6 ) and a cable having a larger cross-section ( FIG. 7 ).
  • the main portion 2 of the body of the gasket also comprises one or more annular slots 15 , which are preferably arranged proximate to the ends of the main portion and are adapted to be engaged by annular protrusions 16 of the containment body 13 when the gasket is in the working position.
  • the annular protrusions 16 cooperate with the annular slots 15 to ensure a correct position of the gasket and prevent deformations of the gasket caused by the pressing action of the presser 12 .
  • the connecting portion 4 has a diameter that is smaller than the diameter of the main portion 2 and forms an annular recess 17 between the shield 3 and the main portion 2 .
  • the annular recess 17 is partially engaged by an edge 18 of the containment body 13 , which prevents infiltrations of fluids or powders which may go around the shield 3 .
  • the gasket 1 is applied to the cable 6 by inserting the cable in the through seat 5 through the slit 7 .
  • the gasket 1 with the inserted cable, is arranged within the containment body 13 , as shown in FIG. 5 , and then the presser 12 is closed on the containment body, compressing the gasket.
  • the cable is locked and perfectly hermetic, because the differentiated deformability of the elastic body of the gasket causes the internal surface of the through seat to adhere to the cable along its entire length, as can be seen in FIG. 9 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Installation Of Indoor Wiring (AREA)
  • Gasket Seals (AREA)
  • Cable Accessories (AREA)
  • Insertion, Bundling And Securing Of Wires For Electric Apparatuses (AREA)
  • Sealing Material Composition (AREA)
US13/394,413 2009-10-08 2010-09-28 Gasket for electric cables Expired - Fee Related US8609990B2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
ITMI2009A1721 2009-10-08
ITMI2009A001721A IT1396198B1 (it) 2009-10-08 2009-10-08 Struttura di guarnizione, particolarmente per cavi elettrici
ITMI2009A001721 2009-10-08
PCT/EP2010/005897 WO2011042128A2 (en) 2009-10-08 2010-09-28 Gasket for electric cables

Publications (2)

Publication Number Publication Date
US20120181754A1 US20120181754A1 (en) 2012-07-19
US8609990B2 true US8609990B2 (en) 2013-12-17

Family

ID=42173993

Family Applications (1)

Application Number Title Priority Date Filing Date
US13/394,413 Expired - Fee Related US8609990B2 (en) 2009-10-08 2010-09-28 Gasket for electric cables

Country Status (6)

Country Link
US (1) US8609990B2 (ru)
EP (1) EP2486635B1 (ru)
CN (1) CN102576991B (ru)
IT (1) IT1396198B1 (ru)
RU (1) RU2521960C2 (ru)
WO (1) WO2011042128A2 (ru)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120018959A1 (en) * 2009-02-04 2012-01-26 Roxtec Ab Eccentric part of a pipe or cable lead-through
US20140270221A1 (en) * 2013-03-14 2014-09-18 Tristan Edward Taylor Sealing Wiring Holes in Electronic Devices
EP3517816A1 (de) * 2018-01-26 2019-07-31 HARTING Electric GmbH & Co. KG Dichteinsatz

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2993721B1 (fr) * 2012-07-23 2015-08-14 Marechal Sepm Joint d'etancheite pour le passage de cables
US9365170B2 (en) * 2012-08-23 2016-06-14 Yazaki North America, Inc. Grommet assembly
CN107431344B (zh) * 2015-03-26 2020-01-14 古河电气工业株式会社 护线环以及带护线环的线束
CN105790024B (zh) * 2016-04-21 2018-09-11 九江英智科技有限公司 一种滑环压线卡装置
DE102017212009A1 (de) * 2017-07-13 2019-03-07 Icotek Project Gmbh & Co. Kg Zugentlastungstülle

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2573600A (en) * 1948-12-17 1951-10-30 Gen Electric Strain relief bushing
US5155303A (en) 1991-05-17 1992-10-13 At&T Bell Laboratories Cable closure including grommet having enhanced sealing capability
JPH0923560A (ja) 1995-07-07 1997-01-21 Shiyoudenshiya:Kk ケーブル導入部封止部材
US5836048A (en) * 1996-08-09 1998-11-17 Mcdonnell Douglas Corporation Universal fire barrier grommet
US5844171A (en) * 1997-04-22 1998-12-01 Mev Corporation Environmentally enclosed cable splice
US6119305A (en) * 1997-06-17 2000-09-19 Ta Mfg Co. Sealing elements
US6376777B1 (en) 1999-05-27 2002-04-23 Sumitomo Wiring Systems, Ltd. Grommet
US20080245547A1 (en) 2007-04-09 2008-10-09 Andrew Corporation Cable and apparatus interconnection close quarters environmental seal
US7442884B2 (en) * 2004-08-30 2008-10-28 3M Innovative Properties Company Sealing member for enclosures
US7930800B1 (en) * 2008-09-08 2011-04-26 Castrale Samual P Grommet apparatus
US7938371B2 (en) * 2005-12-05 2011-05-10 Yazaki Corporation Wiring holding unit
US8033408B2 (en) * 2006-05-15 2011-10-11 Ensto Finland Oy Enclosure with a lead-through and a grommet

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9316172U1 (de) * 1993-10-22 1993-12-09 Kabelmetal Electro Gmbh Muffe zur Aufnahme von Abzweig- oder Verbindungsstellen von optischen oder elektrischen Kabeln
JP3035210B2 (ja) * 1996-03-29 2000-04-24 東海ゴム工業株式会社 ケーブル接続部のシール構造及びそれに用いられるケーブルシール部材
CN101039019A (zh) * 2006-03-18 2007-09-19 威德米勒界面有限公司及两合公司 用于电缆的壳体通孔的密封装置

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2573600A (en) * 1948-12-17 1951-10-30 Gen Electric Strain relief bushing
US5155303A (en) 1991-05-17 1992-10-13 At&T Bell Laboratories Cable closure including grommet having enhanced sealing capability
EP0514174A1 (en) 1991-05-17 1992-11-19 AT&T Corp. Cable closure including grommet having enhanced sealing capability
JPH0923560A (ja) 1995-07-07 1997-01-21 Shiyoudenshiya:Kk ケーブル導入部封止部材
US5836048A (en) * 1996-08-09 1998-11-17 Mcdonnell Douglas Corporation Universal fire barrier grommet
US5844171A (en) * 1997-04-22 1998-12-01 Mev Corporation Environmentally enclosed cable splice
US6119305A (en) * 1997-06-17 2000-09-19 Ta Mfg Co. Sealing elements
US6376777B1 (en) 1999-05-27 2002-04-23 Sumitomo Wiring Systems, Ltd. Grommet
US7442884B2 (en) * 2004-08-30 2008-10-28 3M Innovative Properties Company Sealing member for enclosures
US7938371B2 (en) * 2005-12-05 2011-05-10 Yazaki Corporation Wiring holding unit
US8033408B2 (en) * 2006-05-15 2011-10-11 Ensto Finland Oy Enclosure with a lead-through and a grommet
US20080245547A1 (en) 2007-04-09 2008-10-09 Andrew Corporation Cable and apparatus interconnection close quarters environmental seal
US7930800B1 (en) * 2008-09-08 2011-04-26 Castrale Samual P Grommet apparatus

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120018959A1 (en) * 2009-02-04 2012-01-26 Roxtec Ab Eccentric part of a pipe or cable lead-through
US9765908B2 (en) * 2009-02-04 2017-09-19 Roxtec Ab Eccentric part of a pipe or cable lead-through
US20140270221A1 (en) * 2013-03-14 2014-09-18 Tristan Edward Taylor Sealing Wiring Holes in Electronic Devices
US9247335B2 (en) * 2013-03-14 2016-01-26 Bose Corporation Sealing wiring holes in electronic devices
EP3517816A1 (de) * 2018-01-26 2019-07-31 HARTING Electric GmbH & Co. KG Dichteinsatz

Also Published As

Publication number Publication date
US20120181754A1 (en) 2012-07-19
WO2011042128A2 (en) 2011-04-14
CN102576991A (zh) 2012-07-11
EP2486635A2 (en) 2012-08-15
CN102576991B (zh) 2014-12-24
IT1396198B1 (it) 2012-11-16
RU2012118816A (ru) 2013-11-20
WO2011042128A3 (en) 2011-12-29
EP2486635B1 (en) 2016-08-03
ITMI20091721A1 (it) 2011-04-09
RU2521960C2 (ru) 2014-07-10

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Legal Events

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AS Assignment

Owner name: PALAZZOLI S.P.A., ITALY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:LEVI, BRUNO;REEL/FRAME:028326/0770

Effective date: 20120601

REMI Maintenance fee reminder mailed
LAPS Lapse for failure to pay maintenance fees

Free format text: PATENT EXPIRED FOR FAILURE TO PAY MAINTENANCE FEES (ORIGINAL EVENT CODE: EXP.)

STCH Information on status: patent discontinuation

Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362

FP Lapsed due to failure to pay maintenance fee

Effective date: 20171217